Refrigerating apparatus



' May 25, 1526.

K. K. HALL REFRIGERATING APPARATUS Original iled Nov. 24

3 Sheets-Sheet 1 Inventor:

[(eimeZh If. Hall,

May 25 1926. 1,585,775

' K. K. HALL REFRIGERATING APPARATUS,

Original Filed Nov. 24, 1915 3 Sheets-Sheet 2 53 54 Mfiizzeaa: Inventor:

Kenneth If Hall,

May 25, 1926.

K. K. HALL REFRIGERATING APPARATUS qriginal Filed Nov. 24, 191

W-JZM 3 Sheets-Sheet 5 lm eniorz Knneth K. Hall,

Patented May 25, 1926.

UNITED STATES PATENT OFFICE.

KENNETH K. HALL, OF GRAND LEDGE, MICHIGAN, ASSIGNOR, BY MESNE ASSIGN-MENTS, T DELCO-LIGHT COMPANY, OF DAYTON, OHIO, A CORPORATION OF DELA-WARE.

REFRIGERATING APPARATUS.

Application filed November 24, 1916, Serial No. 133,273. Renewed May 27,1924.

This invention relates to refrigerating apparatus, and particularly toapparatus of the compression type as distinguished from the absorptiontype.

One of the objects of the present invention is to provide a compactapparatus that is particularly adapted for domestic use or torefrigerators of comparatively small size.

Another object of the invention is to provide a double seal around thedrive shaft between the motor and the compressor to insure furtheragainst leakage either to or from the compressor.

Another object of the invention is tp provide a support for theapparatus that will also form a casing or housing for the compressor andfan.

Another object of the invention is to provide a support for thecondenser that will also form a conduit to carry the air from the fan tothe walls of the condenser.

Another object of the invention is to provide a hollow support that isadapted to fit over an opening in a refrigerator and house thecompressor within the support and suspend the expansion or refrigeratingcoil within the refrigerator.

Another object of the invention is to provide a condenser with means fordeflecting the cooling air laterally against the walls thereof. I

Another object of the invention is to proide a compressor and condenserwith air circulating means whereby the air is first circulated aroundthe compressor and then to the condenser.

Another object of the invention is to provide a novel form of outletvalve for the compressor.

Other objects of the invention will appear from the followingdescription taken in connection with the drawings which form a part ofthis specification. and in which:

Fig. 1 is in part a vertical section and in part an elevation of arefrigerating apparatus embodying this invention;

Fig. 2 is a plan view of part of the condenser shown in Fig. 1;

Fig. 3 is a horizontal section substantially on the line 33 of Fig. 1;

Fig. 4 is a vertical section on the line 1-4 of Fig. 1;

Fig. 5 is a vertical section and part elevation of another form of theinvention; an

Fig. 6 is an elevation view illustrating in detail the shield shown insection in Fig. 5.

Referring to the drawings, 10 represents a refrigerator of any desirableform, having a compartment 11 adapted to receive a refrigerating orexpansion coil 12 through an opening 13 in its upper wall. Therefrigerating coil may consist of piping as shown, and it is preferablysupported by several brackets 14 which in the present illustration ofthe invention are removably mounted on a support or casing 15 which isset on the top of the refrigerator 10 over the opening 13 above referredto. This support 15 is of hollow form open at the bottom so that itsinterior is exposed to the interior of the refrigerator. In it ismounted a compressor 16 which is of somewhat unusual and novel form andwhich is provided with a flange 17 by which it is removably secured tothe upper wall 18 of the hollow support.

The support also is formed with an extension or integral ledge 19 uponwhich is mounted a motor 20 for operating the compressor through a shaft21 which connects therewith.

On top of the support is mounted a condenser 22 shown in Fig. 1 in theform of coils of piping secured to the support by a bracket 23 and a rod24 passing centrally through the coils and screwed into the support asat 25.

The form of apparatus shown is designed particularly for use with arefrigerant of low boiling point such as sulphur dioxide (S0,) but theinvention is not necessarily so limited. It will be understood thatthrough the various pipe connections shown in the drawings thecompressor draws the refrigerant from the expansion coil 12 andcompresses it into the condenser 22 Where it is cooled by the cooler airsurrounding the condenser or by the circulation of any suitable coolingmedium around the condenser pipes. The refrigerant is then expanded bymeans of a suitable expansion valve 26 into the refrigerating coil 12where it performs its refrigerating function in the well known manner.The circulation continues as long as the compressor is in operation.

Referring particularly to the compressor 16, the cylinder 27 thereof andthe crank case 28 are integral and one side of the crank case is open asat 29 (see Fig. 4) to permit assembly of the parts and inspection, andthis opening has a detachable cover plate 30 secured by bolts 31. Thecompressor is of the two-cycle type having an inlet port 32 which isuncovered by the piston 33 at one end of its stroke only, and an outletport 34 which is at the extreme head end of the cylinder. An inletpassage 35 and an outlet passage 36 completely surround the cylinderbeing formed in the wall thereof and these are respectively connectedwith the expansion coil 12 and the condenser 22 as above suggested. Theinlet port 32 is controlled by the piston in the usual way, being openedby the latter at the end of its suction stroke, but the outlet port 34,which is an annular port entirely surrounding the cylinder, iscontrolled by a ring valve 37. The edges of the outlet port are inwardlybeveled or tapered and the ring valve 37 is similarly tapered so that itseats closely on the edges of the port. The valve is preferably made oftwo split rings having their joints out of coincidence and of springmaterial tending to coil inwardly to thereby seat firmly on the portedges. The head 38 of the cylinder is formed separately and threadedinto the cylinder as shown so that the valve may be easily removed andreplaced.

The piston 33 is operated by a connecting rod 39 and crank pin 40 on aworm gear 41 rotatably supported in the crank case on a pin 42. A worm43 drives the gear 41 and is mounted on a shaft 44 which aligns with andis connected to the shaft 21 of the motor 20 here-lnabove described.

As shown in Figs. 1 to 4, the compressor 16 has an additional casing orhousing 45 separated from and surrounding the crank case 28 and it isupon this housing that the supporting flange 17 is formed. This permitsof the compressor being assembled as a unit and inserted into thesupport 15 from the bottom before the support is placed on therefrigerator. This also permits of the use of two stuffing boxes orpackings around the shaft 44. Thus there is a packing 46 around theshaft where it passes through the wall of the crank case 28 and apacking 47 where it passes through the wall of the easing 45. Each ofthese packings may be tightened by a screw cap 48 but only the outer oneis accessible except by removing the compressor from its support so thatthe inner one at least is not likely to be tampered with by a novice.

meagre A comparatively large opening 49 is provided in the side wall ofthe support 15 where the shaft 21 passes in to meet the shaft 44 andthese two shafts are preferably connected by a somewhat flexible joint50 to take care of any slight misalignmen of the shafts.

The support 15 is also formed with an air chamber 51 shown in the upperpart thereof beneath the condenser 22, and the wall of the air chamberunder the condenser is perforated or formed with distributingopenings52. The air chamber communicates with the large opening 49 of the hollowsupport by means of asuitable conduit 53 which may be formed as anintegral part of the support or by a detachable piece 54 as shown in thedrawings. This piece 54 in forming this conduit also fills the spacebetween the casing 45 and the side wall of the support so that the airentering the opening 49 will not enter the main interior of the supportbut will be deflected upwardly into the air chamber 51 and through theopenings 52 to the walls of the condenser 22.

For the purpose of thus circulating air as a cooling medium around thecoils of the condenser a fan 55 ismounted in the opening 49 andconnected to be driven by the motor 20. As shown it is mounted directlyon the shaft 44 or on the joint 50 connecting the shaft with the shaft21. A protecting screen 49 is placed over the opening 49.

Referring particularly to the form of the invention shown in Figs. 5 and6, it will be seen that the opening 49 permits the air from the fan 55to directly enter the main interiorfiof the support 15 where it maycirculate around and cool the compressor 16. It is prevented fromreaching the interior of the refrigerator however, by a partition orplate 5.6 which covers the opening 13 and through which pipes 57 and 58pass to connect the expansion coil with the compressor and condenserrespectively. Joints 59 and 60 in these pipes permit the connections tobe made after the plate 56 is in place.

After the air has circulated around the compressor inside the hollowsupport 15 it passes upwardly and out of the support through an opening61 in its upper wall to cool the condenser 62 which is mounted on thesupport.

This condenser 62 is of different form from that shown in Figs. 1 and 2.Condenser 62 has a standpipe 63 which connects with the outlet port ofthe compressor as shown and the upper end of the standpipe connectsthrough openings 63 with a fluted tank or container in which are aseries of plates or disks 64 which are mounted on the standpipe andextend into the various flutes 65 of the tank. The lower part of thetank connects with the expansion valve 26 through the pipe 58 abovereferred to.

With this form of receiver it will be evident that the cooling mediummust pass laterally or horizontally over or against its walls to effecta cooling action and the refrigerant which enters the condenser throughthe standpipe must pass over the disks (Stand into the flutes of thetank in succession before reaching the outlet end of the condenser. Forthe purpose of deflecting the air issuing from the opening 61 so that itwill pass laterally against the condenser walls, a shield 66 is providedadjacent the condenser 62 partly surrounding the condenser at the sidesand top. The air will pass upwardly from opening 61 along the wall ofthe shield and its only outlet then is laterally through the spacesbetween the flutes of the condenser.

It will be understood that the parts of the device of Figs and 6, notspecifically described, are the same as similar parts in the form shownin Figs. 1 to 4.

It will be further understood that other forms of the invention may bemade without departing from the scope hereof.

Having thus described my invention, what I claim and desire to secure byLetters Patent is 1. In a refrigerating apparatus, th combination with arefrigerator having a top opening, of a casing open at the bottom andsupported over said opening and a compressor in said casing exposed tothe interior of the refrigerator through said openin 2. In arefrigerating apparatus, the combination with a refrigerator having atop opening, of a casing open at the bottom and supported over saidopening, a compressor in said casing and a motor outside of said casingand connected to drive the compressor.

3. In a refrigerating apparatus, the combination with a refrigeratorhaving a top opening, of a casing open at the bottom and supported oversaid opening, a compressor in said casing, and an expansion coilconnected to said compressor and adapted to be inserted into saidrefrigerator through said opening.

4. In a refrigerating apparatus, the com bination with a refrigeratorhaving a topopening, of a casing open at the bottom and supported oversaid opening, and a compressor in said casing secured to the upper wallthereof over said openin 5. In a refrigerating apparatus, thecombination with a refrigerator having a top opening, of a casing openat the bottom and supported over said opening, a compressor in saidcasing and an expansion coil connected to said compressor and suspendedin the refrigerator from said casing.

6. In a refrigerating apparatus, the combination with a refrigeratorhaving atop opening, of a casing open at the bottom and supported oversaid opening, a compressor in said casing, an expansion coil in therefrigerator suspended from said casing, a condenser mounted on thecasing, and a motor for driving said compressor.

"7. In a refrigerating apparatus, a compressor having a crank case withan open side, a plate to close said open side, a flat support arrangedparallel to said plate, and means for attaching said compressor to saidsupport.

8. In a refrigerating apparatus, a compressor having a crank case, saidcompressor having a driving shaft extending through a wall of said crankcase. a casing around said shaft outside of said crank case, said shaftextending through a wall of said casing, and shaft packing around saidshaft both on the crank case and at said casing.

9. In a refrigerating apparatus, a compressorhaving a crank case, saidcompressor having a driving shaft extending through a wall of said crankcase, an integral extension of the crank case forming a casing aroundthe part of said shaft extending from said crank case, and shaft packingaround said shaft both at the crank case and at the casing.

10. In a refrigerating apparatus, in combination, a compressor, asupport therefor, a motor for driving the compressor, a fan driven bythe motor, a condenser mounted above the compressor, and air conveyingmeans between said fan and said condenser for causing the flow of airover said condenser surface.

11. In a refrigerating apparatus, in combination, a compressor, asupport therefor, a motor for driving the compressor, a fan driven bythe motor, a condenser mounted on said support above the compressor, andair conveying means associated with said support for conveying air fromsaid fan to various parts of said condenser.

12. In a refrigerating apparatus, in combination, a compressor, asupport therefor having an air chamber with distributing openings in itsupper wall, a motor for driving the compressor, a fan driven by themotor, a condenser mounted on said support above said openings, and aconduit to convey the air from said fan to said chamber.

13. In a refrigerating apparatus, in combination, a compressor, asupport therefor, having an air chamber with distributing openings inits upper Wall, a motor for driving the compressor, a fan driven by themotor, a condenser mounted on said support above said openings, and aconduit formed in said support, to convey the air from said fan to saidchamber.

14. In a. refrigerating apparatus, in combination, a compressor anddriving motor therefor, a fan driven b the motor, a support for thecompressor, aving an air chamher with distributing openings in its upperwall, a condenser supported above said openings and means for conveyingthe air from said fan to said air chamber.

15. In a refrigerating apparatus, in combination, a compressor anddriving motor therefor, a fan driven by the motor, a support for thecompressor having an air chamber \vith distributingopenings in its upperwall, a condenser supported above said open-- ings and having verticalair passages therethrough, and means for conveying the air from saidfan'to said air chamber.

16. In a refrigerating apparatus, in .combination, a compressor, anddriving motor therefor, a fan driven by the motor, a support for thecompressor comprising a casing part surrounding the compressor and anair chamber above the compressor, said air chamber having distributingopenings in its upper wall. and said casing having a conduit formedtherein leading from said fan to said air chamber.

17. In a refrigerating apparatus, in combination. a casing having a maincompartment and an air chamber above said main compartment, said casingalso having a conduit leading from one of its sides to said air chamber,a compressor mounted in the main compartment of said casing, a fanmounted in said conduit, a motor for driving said compressor and fan,and a condenser mounted adjacent said air chamber.

18. In a refrigerating apparatus, in combination, a casing having a maincompartment and an air chamber above said main compartment, said casingalso having a conduit leading from one of its sides to said air chamber,a compressor mounted in the main compartment of said casing, a fanmounted in said conduit, a motor for driving said compressor and havinga shaft extending through said conduit and driving said fan therein, anda condenser adapted to receive air from said chamber.

19. In a refrigerating apparatus, in combination, a casing having a maincompartment, and an air chamber above said main compartment, said casingalso having a conduit leading from one of its sides to said air chamber,a-compressor mounted in the main compartment of said casing, a fanmounted in said conduit, a motor for driving said compressor and fan,and a condenser mounted above said air chamber and adapted to receiveair through distributing openings in the top wall of said air chamber.

20. In a refrigerating apparatus, in combination, a casing, a compressormounted in the casing, a condenser supported outside of the casing. andmeans for forcing air into the casing and then carrying it to thecondenser.

21. In a refrigerating apparatus, in combination, a compressor anddriving motor therefor, a fan driven by the motor, a support for thecompressor, having an air chamber with a distributing opening in a Wallthereof, a condenser supported above said compressor and inair-receiving relationship with said opening, and means for conveyingthe air from said fan to said air chamber.

22. In a refrigerating apparatus, the combination with a refrigeratorhaving an opening in the Wall thereof, of a hollow casing open at oneside adjacent said opening and supported over said opening and acompressor in said casing exposed to the interior of the refrigeratorthrough said opening.

23. In a refrigerating apparatus, in combination. a compressor, asupport therefor, a

motor for driving the compressor, a fan driven by the motor, acondenser, and a conduitformed. in said support for conveying air fromsaid fan to said compressor.

24.. In a refrigerating apparatus, in combination, a compressor, asupport therefor, a condenser, a motor mounted on said support, a shaftconnecting the compressor and motor, a fan on the n'iot-or shaftanddriven thereby, and a conduit associated with said fan and saidsupportfor conveying air between the fan and the condenser to cool thelatter.

25. Refrigerating apparatus comprising a support, a compressor of thereciprocating type mounted thereon and having a rotary shaft, a primemover having a rotary driving shaft in axial alignment with saidcompressor shaft and operatively connected therewith to provide a commonshaft, cooling means operatively connected with the compressor andadapted to receive compressed refrigerant therefrom, and circulatingmeans mounted on said common shaft between the compressor and the primemover for causing the circulation of cooling medium about said coolingmeans.

In testimony whereof I attix my signature.

KENNETH K. HALL.

